2012-2016年三江源垂穗披碱草人工草地碳水热通量观测数据集

A dataset of carbon,water and heat fluxes over an Elymus nutans artificial grassland in the Sanjiangyuan Area(2012–2016)

三江源被誉为“中华水塔”,建植多年生人工草地已成为该地区退化草地恢复工程的重要措施。三江源区垂穗披碱草人工草地水热交换的时空格局是探究该区生态服务功能的核心。青海三江源草地生态系统国家野外科学观测研究站(简称三江源站)自2009年利用涡度相关技术开展垂穗披碱草(Elymus nutans)人工草地碳水热交换的科学观测,2012–2016年间积累了5年高质量连续通量观测数据。为了推动三江源乃至青藏高原草地生态系统碳水热格局等相关研究的发展,三江源站公开发表2012–2016年垂穗披碱草人工草地相关常规气象数据及碳水热通量数据。本数据集包含空气温度、空气相对湿度、土壤温度、土壤湿度、光合有效辐射和降水的常规气象数据子集和净生态系统CO_(2)交换通量、生态系统CO_(2)呼吸通量、总生态系统CO_(2)交换通量、潜热通量、显热通量的碳水热通量数据子集。数据集采用China FLUX推荐的通量数据处理方法,形成了30分钟、日、月和年尺度数据产品,可为三江源区人工草地生碳水热时空动态的科学认知、遥感反演、模型验证提供地面观测数据支撑。

In the Sanjiangyuan Area known as the“Chinese Water Tower”,planting perennial artificial grassland has become an important measure for the restoration of degraded grassland in this area.The spatialtemporal pattern of the carbon,water,and heat fluxes of Elymus nutans artificial grasslands are crucial for comprehending the ecological service functions of the Elymus nutans artificial grasslands in the Sanjiangyuan Area.Sanjiangyuan Grassland Ecosystem National Observation and Research Station(referred to as Sanjiangyuan Sation)has used the eddy covariance technique to monitor the carbon,water,and heat fluxes over an Elymus nutans artificial grassland for 5 years since 2009.In order to advance the research on carbon,water,and heat fluxes and other related researches in the Sanjiangyuan Area and the broader QinghaiTibetan Plateau alpine ecosystems,we plan to publish the routine meteorological data of carbon,water and heat fluxes over an Elymus nutans artificial grassland observed from 2012 to 2016.This dataset includes routine meteorological data(i.e.air temperature,air relative humidity,water vapor pressure,soil temperature,soil moisture,photosynthetically active radiation,and precipitation)and carbon,water,and heat fluxes data(net ecosystem CO_(2) exchange,ecosystem CO_(2) respiration,gross ecosystem CO_(2) exchange,latent heat flux,and sensible heat flux)on half-hourly,daily,monthly,and yearly scales.The dataset used the flux data processing method recommended by China FLUX.It is expected to provide field observational data support for scientific understanding,remote sensing retrieval processes,and model validation efforts in exploring the spatiotemporal patterns of carbon,water,and heat exchanges in artificial Elymus nutans grasslands.